7. The following data were collected in a clinical trial tocompare a new drug to a placebo for its effectiveness in loweringtotal serum cholesterol. New Drug (n=75) Placebo (n=75) TotalSample (n=150) Mean (SD) Total Serum Cholesterol 182.0 (24.5) 206.3(21.8) 194.15 (23.2) % Patients with Total Cholesterol < 20078.0% 65.0% 71.5% a) Generate the 95% confidence interval for thedifference in mean total cholesterol levels between treatments b)Generate a 95% confidence interval for the difference inproportions of all patients with total cholesterol < 200. c) Howmany patients would be required to detect the difference inproportions observed in the current study with a confidenceinterval of 95%. ?
